Does this sound like a good idea?
- Power Inverter System (P.I.S.) – Set truck up like squad. Place second battery in tool box with 120 v power inverter / charger. Place a 120 v AC outlet in center of tool box on the outside. On the driver side of tool box cut hole and place receptacle to charge system. On engine place oil pan heater and water heater and hook it into the inverter system that when the truck is plugged into a shore line, not only will the system charge the main and second battery, it will also run the engine heaters.
- APCM Installation – Auxiliary Power Control Module. Unit that automatically idles engine up when the vehicle is stationary battery voltage at proper level. Used on 1995 and up Ford trucks with the Power Stroke engine. Need to find a way to make it work on a 1994 F150 with a 5.0L gas engine to keep P.I.S. charged when parked with full electric load (e.g. headlights, warning lights, and any other high draw equipment running.)
- Battery </ST1
Disconnect Switch – Switch mounted below driver’s side seat to disconnect both batteries from system to prevent back feed while system is plugged into shore line. Switch must have four positions: Off, <ST1
Battery</ST1
1, Both, <ST1
Battery</ST1
2<O
Why not just add a second battery with an isolator, and a 200 amp alternator?
The heaters can be plugged in when needed without tying them to the rest of the system. Seems simpler, cheaper, and less chance for problems.
If you did use an isolator, there should never be a need to charge the truck's starting battery.










